The main Syrian Kurdish force fighting Islamic State militants in northern Syria said Friday that it has enough fighters to take the extremists’ de facto capital of Raqqa with the help of the U.S.-led coalition - remarks that reflect a veiled warning to Ankara and also to rival, Turkey-backed opposition forces making headway toward the city.

President Donald Trump’s transition team learned before the inauguration that incoming National Security Adviser Michael Flynn might register with the government as a foreign agent, White House officials acknowledged Friday.

A sophisticated missile defense system being delivered to South Korea may give President Trump a bargaining chip that no other U.S. president has had to pressure China to rein in North Korea’s ballistic missile and nuclear programs.

The Trump White House and the U.S. intelligence community moved closer to open warfare in the wake of National Security Adviser Michael Flynn’s spectacular downfall — and the fallout is unnerving key American intelligence partners around the world, according to several high-level national security sources.

An intelligence ship cruising just off the East Coast. A cruise missile test that may violate arms treaties. A string of Russian fighter jet fly-bys that buzz U.S. and allied ships. Provocations all along the fault lines separating Russia from the West, from the Baltics to the Balkans.

At his first White House meeting with Israeli Prime Minister Benjamin Netanyahu, President Trump shook up Middle East peace negotiations Tuesday, forging a stronger alliance with the Jewish state and threatening to walk away from a two-state solution for the Palestinians.

A defiant North Korea upped the ante in its dangerous game of brinkmanship with the United States and its allies over its nuclear weapons program, going public with a large celebration in Pyongyang on Tuesday of what it claims was a successful ballistic missile launch over the weekend.